Title:
CHECK VALVE, CHECK VALVE-EQUIPPED BRANCHING TOOL, AND CLEANER DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/251377
Kind Code:
A1
Abstract:
A branching tool (20) that serves as a check valve to be incorporated in a cleaner device comprises: a body (26) which is provided with an inflow passage (22) and a first outflow passage (24a); a seal member (30) which is configured to allow a cleaning fluid to flow into the first outflow passage (24a) from the inflow passage (22) when the cleaner device is in operation and which is configured to seal flowing back of the cleaning fluid into the inflow passage (22) from the first outflow passage (24a) when the cleaner device is not in operation; and a lid member (28) which is combined with the body (26) to form a storage chamber 34 for storing the seal member (30). The lid member (28) has a communication hole (40) which connects the storage chamber (34) to the outside. Either the lid member (28) or the body (26) has provided thereto a water-receiving recess (42) that is disposed around the communication hole (40).
Inventors:
MATSUNAGA TAKAHIRO (JP)
SAKAI MASARU (JP)
ICHIKAWA YASUHIRO (JP)
SAKAI MASARU (JP)
ICHIKAWA YASUHIRO (JP)
Application Number:
PCT/JP2021/021727
Publication Date:
December 16, 2021
Filing Date:
June 08, 2021
Export Citation:
Assignee:
KOITO MFG CO LTD (JP)
International Classes:
F16K15/14; B60S1/48; F16K27/00; F16L41/02
Domestic Patent References:
| WO2018230558A1 | 2018-12-20 |
Foreign References:
| JPS598711B2 | 1984-02-27 | |||
| JP2012501890A | 2012-01-26 | |||
| JPH02141357U | 1990-11-28 | |||
| JPH0348923Y2 | 1991-10-18 |
Other References:
See also references of EP 4166828A4
Attorney, Agent or Firm:
MORISHITA Sakaki (JP)
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